The vector a, b and c are given as a=2i+3j-4k. b =5i+3j+7k. c =6i+2j-k find 1)a-2b+4c
2)5a+2b-c​

Emma will roll two number cubes labeled 1 through 6. she will record the sum of the two numbers after each roll. she will roll the two cubes 540 times. how many times should emma expect the sum to equal 5?

Ricardo ran the 400 meter race 3 times his fastest time was 54.3 seconds his slowest time was 56.1 seconds if his average time was 55.0 seconds what was his time for the third race

Draw a scaled copy of the circle using a scale factor of 2